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प्रश्न
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
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उत्तर
| Noble gases | Symbols |
| (a) Helium | He |
| (b) Neon | Ne |
| (c) Argon | Ar |
| (d) Krypton | Kr |
| (e) Xenon | Xe |
| (f) Radon | Rn |
संबंधित प्रश्न
Give two examples of the following:
Solid + Liquid mixture
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
State which element exists in the highest percentage in earth’s crust.
State the type of element for the following:
Platinum
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Write the radical of the following valency:
Chlorine [Chloride]
Write the chemical formula of the following:
Sodium bromide
Give the formula of the following gas:
Carbon monoxide
State the valency of the following metallic element and write symbol with the valency
Sodium
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Sulphite
